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Don't send RST_STREAM to idle stream

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This commit is contained in:
Tatsuhiro Tsujikawa 2020-06-10 20:55:30 +09:00
parent b6b135c060
commit c8bf8c6521
4 changed files with 117 additions and 2 deletions
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15
lib/nghttp2_session.c
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@ -959,6 +959,18 @@ int nghttp2_session_add_rst_stream(nghttp2_session *session, int32_t stream_id,
return 0;
}
/* Sending RST_STREAM to an idle stream is subject to protocol
violation. Historically, nghttp2 allows this. In order not to
disrupt the existing applications, we don't error out this case
and simply ignore it. */
if (nghttp2_session_is_my_stream_id(session, stream_id)) {
if ((uint32_t)stream_id >= session->next_stream_id) {
return 0;
}
} else if (session->last_recv_stream_id < stream_id) {
return 0;
}
/* Cancel pending request HEADERS in ob_syn if this RST_STREAM
refers to that stream. */
if (!session->server && nghttp2_session_is_my_stream_id(session, stream_id) &&
@ -969,8 +981,7 @@ int nghttp2_session_add_rst_stream(nghttp2_session *session, int32_t stream_id,
headers_frame = &nghttp2_outbound_queue_top(&session->ob_syn)->frame;
assert(headers_frame->hd.type == NGHTTP2_HEADERS);
if (headers_frame->hd.stream_id <= stream_id &&
(uint32_t)stream_id < session->next_stream_id) {
if (headers_frame->hd.stream_id <= stream_id) {
for (item = session->ob_syn.head; item; item = item->qnext) {
aux_data = &item->aux_data.headers;

2
tests/main.c
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@ -211,6 +211,8 @@ int main() {
!CU_add_test(pSuite, "submit_extension", test_nghttp2_submit_extension) ||
!CU_add_test(pSuite, "submit_altsvc", test_nghttp2_submit_altsvc) ||
!CU_add_test(pSuite, "submit_origin", test_nghttp2_submit_origin) ||
!CU_add_test(pSuite, "submit_rst_stream",
test_nghttp2_submit_rst_stream) ||
!CU_add_test(pSuite, "session_open_stream",
test_nghttp2_session_open_stream) ||
!CU_add_test(pSuite, "session_open_stream_with_idle_stream_dep",

101
tests/nghttp2_session_test.c
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@ -6398,6 +6398,107 @@ void test_nghttp2_submit_origin(void) {
nghttp2_session_del(session);
}
void test_nghttp2_submit_rst_stream(void) {
nghttp2_session *session;
nghttp2_session_callbacks callbacks;
nghttp2_outbound_item *item;
int rv;
int32_t stream_id;
memset(&callbacks, 0, sizeof(nghttp2_session_callbacks));
/* Sending RST_STREAM to idle stream (local) is ignored */
nghttp2_session_client_new(&session, &callbacks, NULL);
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, 1,
NGHTTP2_NO_ERROR);
CU_ASSERT(0 == rv);
item = nghttp2_outbound_queue_top(&session->ob_reg);
CU_ASSERT(NULL == item);
nghttp2_session_del(session);
/* Sending RST_STREAM to idle stream (remote) is ignored */
nghttp2_session_client_new(&session, &callbacks, NULL);
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, 2,
NGHTTP2_NO_ERROR);
CU_ASSERT(0 == rv);
item = nghttp2_outbound_queue_top(&session->ob_reg);
CU_ASSERT(NULL == item);
nghttp2_session_del(session);
/* Sending RST_STREAM to non-idle stream (local) */
nghttp2_session_client_new(&session, &callbacks, NULL);
open_sent_stream(session, 1);
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, 1,
NGHTTP2_NO_ERROR);
CU_ASSERT(0 == rv);
item = nghttp2_outbound_queue_top(&session->ob_reg);
CU_ASSERT(NULL != item);
CU_ASSERT(NGHTTP2_RST_STREAM == item->frame.hd.type);
CU_ASSERT(1 == item->frame.hd.stream_id);
nghttp2_session_del(session);
/* Sending RST_STREAM to non-idle stream (remote) */
nghttp2_session_client_new(&session, &callbacks, NULL);
open_recv_stream(session, 2);
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, 2,
NGHTTP2_NO_ERROR);
CU_ASSERT(0 == rv);
item = nghttp2_outbound_queue_top(&session->ob_reg);
CU_ASSERT(NULL != item);
CU_ASSERT(NGHTTP2_RST_STREAM == item->frame.hd.type);
CU_ASSERT(2 == item->frame.hd.stream_id);
nghttp2_session_del(session);
/* Sending RST_STREAM to pending stream */
nghttp2_session_client_new(&session, &callbacks, NULL);
stream_id =
nghttp2_submit_request(session, NULL, reqnv, ARRLEN(reqnv), NULL, NULL);
CU_ASSERT(stream_id > 0);
item = nghttp2_outbound_queue_top(&session->ob_syn);
CU_ASSERT(NULL != item);
CU_ASSERT(NGHTTP2_HEADERS == item->frame.hd.type);
CU_ASSERT(0 == item->aux_data.headers.canceled);
rv = nghttp2_submit_rst_stream(session, NGHTTP2_FLAG_NONE, stream_id,
NGHTTP2_NO_ERROR);
CU_ASSERT(0 == rv);
item = nghttp2_outbound_queue_top(&session->ob_syn);
CU_ASSERT(NULL != item);
CU_ASSERT(NGHTTP2_HEADERS == item->frame.hd.type);
CU_ASSERT(1 == item->aux_data.headers.canceled);
nghttp2_session_del(session);
}
void test_nghttp2_session_open_stream(void) {
nghttp2_session *session;
nghttp2_session_callbacks callbacks;

1
tests/nghttp2_session_test.h
View File

@ -103,6 +103,7 @@ void test_nghttp2_submit_invalid_nv(void);
void test_nghttp2_submit_extension(void);
void test_nghttp2_submit_altsvc(void);
void test_nghttp2_submit_origin(void);
void test_nghttp2_submit_rst_stream(void);
void test_nghttp2_session_open_stream(void);
void test_nghttp2_session_open_stream_with_idle_stream_dep(void);
void test_nghttp2_session_get_next_ob_item(void);